Find cheap Southwest flights to Harlingen
RDU — HRL
Aug 26 — Sep 21
Round-trip
1 adult, Economy
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Cheapest Southwest flights from USA to HarlingenExplore the most affordable Southwest flight options available from USA to Harlingen. Find the lowest fares with prices last updated on July 27, 2026.
Explore the most affordable Southwest flight options available from USA to Harlingen. Find the lowest fares with prices last updated on July 27, 2026.
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:10 am
AUS
- HRL
Nonstop1h 10m
Southwest
Thu 8/2711:55 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$97
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:00 pm
AUS
- HRL
Nonstop1h 05m
Southwest
Sun 8/236:50 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$123
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:10 am
AUS
- HRL
Nonstop1h 10m
Southwest
Sun 8/166:50 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$133
Best Southwest flights from USA to HarlingenDiscover carefully curated Southwest flight deals from USA to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated Southwest flight deals from USA to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:40 am
AUS
- HRL
Nonstop1h 10m
Southwest
Sat 9/124:30 pm
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/22![Southwest logo]()
$97
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:40 am
AUS
- HRL
2 stops8h 35m
Southwest
Thu 8/275:55 pm
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$112
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:00 pm
AUS
- HRL
Nonstop1h 05m
Southwest
Sun 8/236:50 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$123
Direct Southwest flights from USA to HarlingenExplore non-stop Southwest flight options from USA to Harlingen based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 27, 2026.
Explore non-stop Southwest flight options from USA to Harlingen based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 27, 2026.
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:10 am
AUS
- HRL
Nonstop1h 10m
Southwest
Thu 8/2711:55 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$97
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:25 am
AUS
- HRL
Nonstop1h 10m
Southwest
Wed 9/96:35 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/26![Southwest logo]()
$117
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:00 pm
AUS
- HRL
Nonstop1h 05m
Southwest
Sun 8/236:50 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$123
Last-minute Southwest flights from USA to HarlingenDiscover last-minute Southwest flight deals from USA to Harlingen. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute Southwest flight deals from USA to Harlingen. Data last updated July 27, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:10 am
AUS
- HRL
Nonstop1h 10m
Southwest
Thu 8/2711:55 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$97
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:00 pm
AUS
- HRL
Nonstop1h 05m
Southwest
Sun 8/236:50 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$123
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:10 am
AUS
- HRL
Nonstop1h 10m
Southwest
Sun 8/166:50 am
HRL
- AUS
Nonstop1h 10m
Southwest
Deal found 7/23![Southwest logo]()
$133
One-way Southwest flights to HarlingenSearch for one-way Southwest flight options to Harlingen. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way Southwest flight options to Harlingen. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:00 pm
AUS
- HRL
Nonstop1h 05m
Southwest
Deal found 7/22![Southwest logo]()
$49
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:10 pm
AUS
- HRL
1 stop3h 25m
Southwest
Deal found 7/25![Southwest logo]()
$69
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:05 pm
AUS
- HRL
Nonstop1h 05m
Southwest
Deal found 7/23![Southwest logo]()
$75
Flights to Harlingen with Southwest at a glance
Find detailed information about Southwest flights from USA to Harlingen. Explore the options provided by Southwest to plan your journey from USA to Harlingen. Data last updated July 27, 2026.
Cheapflights Insights
Find cheap Southwest flights to Harlingen
US0-HRL
AUS-HRL
How long is the flight to Harlingen with Southwest?
On average, Southwest flights from the United States to Harlingen take 2 hours 46 minutes. Flights to Harlingen from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
Southwest weekly flight availability to Harlingen
The most flights to Harlingen operated by Southwest are scheduled on a Monday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).
FAQs about flights to Harlingen with Southwest
Reviews of Southwest
See what Cheapflights users have to say about their Southwest experience.
Overview
Reviews
Southwest
4,229 reviews
Overview
Crew
8.6
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Recent reviews
10.0
|Jul 2026Good
8.0
|Jun 2026One delay in a 2 layover flight=a good trip. The crew was great.
6.0
|Jun 2026The seats were super cramped and couldn’t move without hitting other passengers
8.0
|Jun 2026The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
10.0
|Jun 2026On time and no problems
1 out of 1410
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